speedo.h

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/* $XConsortium: speedo.h,v 1.7 95/06/08 23:20:39 gildea Exp $ */

/*

Copyright 1989-1991, Bitstream Inc., Cambridge, MA.
You are hereby granted permission under all Bitstream propriety rights to
use, copy, modify, sublicense, sell, and redistribute the Bitstream Speedo
software and the Bitstream Charter outline font for any purpose and without
restrictions; provided, that this notice is left intact on all copies of such
software or font and that Bitstream's trademark is acknowledged as shown below
on all unmodified copies of such font.

BITSTREAM CHARTER is a registered trademark of Bitstream Inc.


BITSTREAM INC. DISCLAIMS ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.  BITSTREAM SHALL NOT BE LIABLE FOR ANY DIRECT OR INDIRECT
DAMAGES, INCLUDING BUT NOT LIMITED TO LOST PROFITS, LOST DATA, OR ANY OTHER
INCIDENTAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF OR IN ANY WAY CONNECTED
WITH THE SPEEDO SOFTWARE OR THE BITSTREAM CHARTER OUTLINE FONT.

*/

#ifndef _SPEEDO_H_
#define _SPEEDO_H_

#include <X11/Xmd.h>

/***************************** S P E E D O . H *******************************
 ****************************************************************************/

/*****  USER OPTIONS OVERRIDE DEFAULTS ******/
#include "useropt.h"

/*****  CONFIGURATION DEFINITIONS *****/

#ifndef INCL_CLIPPING
#define INCL_CLIPPING 0		/* 0 indicates CLIPPING code is not compiled in*/
#endif

#ifndef INCL_SQUEEZING
#define INCL_SQUEEZING 0		/* 0 indicates SQUEEZE code is not compiled in*/
#endif

#ifndef INCL_EXT
#define  INCL_EXT       1          /* 1 to include extended font support */
#endif                             /* 0 to omit extended font support */

#ifndef INCL_RULES
#define  INCL_RULES     1          /* 1 to include intelligent scaling support */
#endif                             /* 0 to omit intelligent scaling support */

#ifndef INCL_BLACK                                                    
#define  INCL_BLACK     1          /* 1 to include blackwriter output support */
#endif                             /* 0 to omit output mode 0 support */

#ifndef INCL_SCREEN
#define  INCL_SCREEN     0          /* 1 to include screen writeroutput support */
#endif                             /* 0 to omit support */

#ifndef INCL_OUTLINE
#define  INCL_OUTLINE     0          /* 1 to include outline output support */
#endif                             /* 0 to omit output mode 2 support */

#ifndef INCL_2D
#define  INCL_2D          0          /* 1 to include 2d blackwriter output support */
#endif                             /* 0 to omit output mode 3 support */

#ifndef INCL_USEROUT
#define INCL_USEROUT      0          /* 1 to include user defined output module support */
#endif                               /* 0 to omit user defined output module support */

#ifndef INCL_LCD
#define  INCL_LCD       1          /* 1 to include load char data support*/
#endif                             /* 0 to omit load char data support */
#ifndef INCL_ISW
#define  INCL_ISW       0          /* 1 to include imported width support */
#endif                             /* 0 to omit imported width support */

#ifndef INCL_METRICS
#define  INCL_METRICS   1          /* 1 to include metrics support */
#endif                             /* 0 to omit metrics support */

#ifndef INCL_KEYS
#define  INCL_KEYS      0          /* 1 to include multi key support */
#endif                             /* 0 to omit multi key support */

#ifndef INCL_MULTIDEV
#define  INCL_MULTIDEV  0          /* 1 to include multiple output device support */
#endif                             /* 0 to omit multi device support */

#ifndef SHORT_LISTS
#define SHORT_LISTS 1                  /* 1 to allocate small intercept lists */
#endif

#ifndef PROTOS_AVAIL                /* 1 to use function prototyping */
#define PROTOS_AVAIL 0   			/* 0 to suppress it */
#endif

#ifndef FONTFAR						/* if Intel mixed memory model implementation */
#define FONTFAR						/* pointer type modifier for font buffer */
#endif

#ifndef STACKFAR					/* if Intel mixed memory model implementation */
#define STACKFAR					/* pointer type modifier for font buffer */
#endif

#ifndef GLOBALFAR
#define GLOBALFAR
#endif
 
#define MODE_BLACK 0
#define MODE_SCREEN MODE_BLACK + INCL_BLACK
#define MODE_OUTLINE MODE_SCREEN + INCL_SCREEN
#define MODE_2D MODE_OUTLINE + INCL_OUTLINE

#ifdef DYNAMIC_ALLOC
#if DYNAMIC_ALLOC 
#define STATIC_ALLOC 0
#endif
#endif

#ifdef REENTRANT_ALLOC
#if REENTRANT_ALLOC 
#define STATIC_ALLOC 0
#endif
#endif

#ifndef STATIC_ALLOC
#define STATIC_ALLOC 1
#endif

#ifndef DYNAMIC_ALLOC
#define DYNAMIC_ALLOC 0
#endif

#ifndef REENTRANT_ALLOC
#define REENTRANT_ALLOC 0
#endif

/*****  TYPE  DEFINITIONS *****/

#ifndef STDEF
#ifndef SPD_BMAP

typedef INT8 fix7;

typedef   double   real;

typedef   CARD8    ufix8;
#ifndef VFONT
typedef   CARD8    boolean;
#endif
#endif

typedef   INT16    fix15;

typedef   CARD16   ufix16;

typedef   INT32    fix31;

typedef   CARD32   ufix32;
#endif

/***** GENERAL CONSTANTS *****/

#ifndef FALSE
#define  FALSE     0
#define  TRUE      1
#endif

#ifndef NULL
#define NULL       0
#endif

#define  FUNCTION

#define  BIT0           0x01
#define  BIT1           0x02
#define  BIT2           0x04
#define  BIT3           0x08
#define  BIT4           0x10
#define  BIT5           0x20
#define  BIT6           0x40
#define  BIT7           0x80

#if INCL_EXT                       /* Extended fonts supported? */

#define  MAX_CONSTR     750       /* Max constraints (incl 4 dummies) */
#define  MAX_CTRL_ZONES  256       /* Max number of controlled orus */
#define  MAX_INT_ZONES   256       /* Max number of interpolation zones */

#else                              /* Compact fonts only supported */

#define  MAX_CONSTR      512       /* Max constraints (incl 4 dummies) */
#define  MAX_CTRL_ZONES   64       /* Max number of controlled orus */
#define  MAX_INT_ZONES    64       /* Max number of interpolation zones */

#endif

#define  SCALE_SHIFT   12   /* Binary point positiion for scale values */
#define  SCALE_RND   2048   /* Rounding bit for scaling transformation */
#define  ONE_SCALE   4096   /* Unity scale value */
    
#ifdef INCL_SCREEN   /* constants used by Screenwriter module */
#define LEFT_INT 1   /* left intercept */
#define END_INT 2    /* last intercept */
#define FRACTION 0xFC  /* fractional portion of intercept type list */
#endif

#if INCL_SQUEEZING || INCL_CLIPPING          /* constants used by SQUEEZEing code */
#define EM_TOP 764
#define EM_BOT -236
#endif

/*****  STRUCTURE DEFINITIONS *****/
#if PROTOS_AVAIL

#if REENTRANT_ALLOC
#define PROTO_DECL1 struct speedo_global_data GLOBALFAR *sp_global_ptr
#define PROTO_DECL2 PROTO_DECL1 ,
#else
#define PROTO_DECL1 void
#define PROTO_DECL2
#endif
#endif

typedef
struct buff_tag
    {
    ufix8 FONTFAR *org;                   /* Pointer to start of buffer */
    ufix32  no_bytes;              /* Size of buffer in bytes */
    } 
buff_t;                            /* Buffer descriptor */

typedef  struct constr_tag
    {
    ufix8 FONTFAR *org;                   /* Pointer to first byte in constr data  */
    ufix16  font_id;               /* Font id for calculated data           */
    fix15   xppo;                  /* X pixels per oru for calculated data  */
    fix15   yppo;                  /* Y pixels per oru for calculated data  */
    boolean font_id_valid;         /* TRUE if font id valid                 */
    boolean data_valid;            /* TRUE if calculated data valid         */
    boolean active;                /* TRUE if constraints enabled           */
    }                  
constr_t;                          /* Constraint data state                 */

typedef  struct kern_tag
    {
    ufix8 FONTFAR *tkorg;                 /* First byte of track kerning data      */
    ufix8 FONTFAR *pkorg;                 /* First byte of pair kerning data       */
    fix15   no_tracks;             /* Number of kerning tracks              */
    fix15   no_pairs;              /* Number of kerning pairs               */
    }                  
kern_t;                            /* Kerning control block                 */

typedef struct specs_tag
    {
    buff_t STACKFAR *pfont;                 /* Pointer to font data                  */
    fix31   xxmult;                /* Coeff of X orus to compute X pix      */
    fix31   xymult;                /* Coeff of Y orus to compute X pix      */
    fix31   xoffset;               /* Constant to compute X pix             */
    fix31   yxmult;                /* Coeff of X orus to compute Y pix      */
    fix31   yymult;                /* Coeff of Y orus to compute Y pix      */
    fix31   yoffset;               /* Constant to compute Y pix             */
    ufix32  flags;                 /* Mode flags:                           */
                                   /*   Bit  0 - 2: Output module selector: */
                                   /*   Bit  3: Send curves to output module*/
                                   /*   Bit  4: Use linear scaling if set   */
                                   /*   Bit  5: Inhibit constraint table    */